Pottery-dipping tub



(No Model.)

G. G. THOMPSON.

POTTERY DIPPING TUB.

No. 409,075. Patented Aug. 13 1889..

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UNITED STATES PATENT OFFICE.

CASSIUS O. THOMPSON, OF EAST LIVERPOOL, OHIO.

POTTERY-*DIPPING TUB.

SPECIFICATION forming part of Letters Patent No. 409,075, dated August13, 1889.

Application filed January 1'7, 1889. Serial No. 296,673. (No model.)

To all whom it may concern.-

Be it known that I, CAssIUs C. THOMPSON, of East Liverpool, in thecounty of Columbiana and State of Ohio, have invented certain new anduseful Improvements in Pottery-Dipping Tubs; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it pertains tomake and use it, reference being had to the accompanying drawings, whichform a part of this specification.

My invention relates to an improvement in pottery-dipping tubs; and itconsists in the combination of a tub in which the glazingmixture isplaced with an agitating device which is placed in the bottom of thetub, and over which is preferably placed a screen, as will be more fullydescribed hereinafter.

The object of my invention is to place in the bottom of the tub in whichthe glazing compound is kept an agitating device which will keep theglazing compound in constant motion and prevent the heavier particlestherein from settling to the bottom, and thus obviate the necessity ofhaving to stir up the compound each time before an article is dipped.

Figure 1 represents a vertical section of a machine which embodiesmyinvention. Fig. 2 shows a slight modification.

A represents the tub in which the glazing compound is placed, and whichtub is preferably made smaller at the bottom than the top. In the bottomof this tub is journaled an agitating device B, of any suitabledescription, which is operated by the shaft 0, which may extendvertically, as is here shown, or through the side or bottom of the tub,just as may be preferred. Although a screw is here shown, it is evidentthat any other form of device may be used for the purpose of keeping theglazing compound in constant motion, and thus preventing any of theheavier particles therein from settling to the bottom of the tub. Ashere shown, the shaft 0 extends vertically through the tub, and is heldin positionby means of a bearing G, formed in the bottom of the tub, anda second bearing II, which may be attached to the top in any suitablemanner.

For the purpose of preventing the heavier particles of the mixture fromsettling in the bottom of the tub upon the agitating device,

and for the purpose of preventing the agitating device from forcing theglazing compound upward too forcibly, a fine netting or screen I isplaced in the bottom of the tub, just above the agitating device, asshown. Should the agitator at any time be made to revolve more rapidlythan is necessary, this screen, made of any suitable material, willprevent the compound from being agitated too violently to allow nicedippingto be done. In each case the wheel or agitating device B is soshaped as to cause an upward movement of the material, whereby the heavyparticles are kept at the top, and the screen is for the purpose ofmodifying the upward current by interrupting it, and thus causing it tobe always steady and uniform.

Heretofore the glazing compound has been placed in a tub without anagitating device, and the consequence h as been that the heavierparticles settle to the bottom at once. Before an article can be dippedthe agitator is obliged to use a paddle for the purpose of stirring upthe mixture, so that an article will be properly glazed. By means of theconstruction here shown the necessity of an operator stopping to stir upthe glazing compoundis done away with, and the consequence is a personcan dip more rapidly and effectively than hasheretofore been possible.

Having thus described my invention, I claim 1. The combination, with apottery-glaziefis dipping-tub, and an agitator placed in the bottomthereof and causing an upward current of the material placed in the tub,of a screen which covers the entire surface above the agitator, for thepurpose of modifying the upward current, substantially as shown anddescribed.

2. The combination, with a pottery-glaziers dipping-tub having its lowerend reducedin size, and a screen which covers the top ofthe reducedportion, of an agitator placed within the reduced portion beneath thescreen, which causes an upward current of the material, and which ismodified by the screen, substantially as set forth.

In testimony whereof I aifix my signature in presence of two witnesses.

CASSIUS C. THOMPSON.

Vitnesses:

PHILIP MAURO, F. A. LEHMANN.

